1428000256 has 20 divisors (see below), whose sum is σ = 2853212472. Its totient is φ = 713999872.

The previous prime is 1428000247. The next prime is 1428000269. The reversal of 1428000256 is 6520008241.

1428000256 = T₃₀₈₅₃ + T₃₀₈₅₄ + T₃₀₈₅₅.

It is a super-2 number, since 2×1428000256² = 4078369462272131072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1394020 + ... + 1395043.

Almost surely, 2^1428000256 is an apocalyptic number.

1428000256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1428000256 is the 30855-th centered triangular number.

It is an amenable number.

1428000256 is a deficient number, since it is larger than the sum of its proper divisors (1425212216).

1428000256 is an frugal number, since it uses more digits than its factorization.

1428000256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789081 (or 2789065 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 1428000256 is about 37788.8906426214. The cubic root of 1428000256 is about 1126.0977613254.

Adding to 1428000256 its reverse (6520008241), we get a palindrome (7948008497).

The spelling of 1428000256 in words is "one billion, four hundred twenty-eight million, two hundred fifty-six", and thus it is an aban number.